SOLUTION: What are the similarities and differences between functions and linear equations?

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Question 181314: What are the similarities and differences between functions and linear equations?
Answer by Mathtut(3670) About Me  (Show Source):
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every linear equation is a function but not vice versa.
:
There is one exception to this. The only linear equation that is not a function is a VERTICAL line, so any equation that takes the form of x=a is not a function.
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they are more similar than different.
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for example
:
y=mx+b
:
f(x)=mx+b